Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
  • G02F1/133314—Back frames
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
  • G02F1/1336—Illuminating devices
  • G02F1/133628—Illuminating devices with cooling means

Definitions

• the present invention relates to the field of liquid crystal display, and in particular to a hollow backplane and a backlight module using the same. Background technique
• Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
• Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a casing, a liquid crystal panel disposed in the casing, and a backlight module disposed in the casing.
• the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates, and the liquid crystal molecules are controlled to change direction by energization or not, and the light of the backlight module is refracted. Come out to produce the picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module needs to be used to display the image normally.
• the backlight module becomes one of the key components of the liquid crystal display device.
• the backlight module is divided into a side-lit backlight module and a direct-lit backlight module according to the incident position of the light source.
• a light source such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
• the side-lit backlight module has a backlight LED strip (Light bar) disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is incident on the light guide plate (LGP, Light Guide Plate) side. The surface enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then passes through the optical film group to form a surface light source to be supplied to the liquid crystal panel.
• LGP Light Guide Plate
• the liquid crystal display module generally includes: a backlight module 100 , a plastic frame 300 disposed on the backlight module 100 , a liquid crystal display panel 500 disposed on the plastic frame 300 , and a frame disposed on the liquid crystal display panel 500 .
• the backlight module 100 includes: a backplane 110, a backlight 130 disposed in the backplane 110, a reflective sheet 150 disposed in the backplane 110, a light guide 170 disposed on the reflective sheet 150, and a guide
• the optical film set 190 on the light plate 170 is used to carry the liquid crystal display panel 500.
• the frame 700 is locked with the back plate 110 of the backlight module 100, and is assembled into a liquid crystal display module.
• the existing backing plate 110 is generally a sheet metal piece, which is formed by press forming, and the backing plate 110 is generally heavy, which is disadvantageous for the weight reduction of the liquid crystal display device, and the material cost and processing cost thereof are high. , is not conducive to cost control. Summary of the invention
• An object of the present invention is to provide a hollow backing plate which is simple in structure, light in weight, and low in cost, and is advantageous for weight reduction of a liquid crystal display device.
• Another object of the present invention is to provide a backlight module which uses a hollow backplane to reduce production cost and product weight to a large extent, and is advantageous for weight reduction of a liquid crystal display device.
• the present invention provides a hollow backplane, comprising: a body and a heat sink disposed on the body, the body comprising a bottom plate and a side plate connecting the bottom plate, wherein the bottom plate is provided with a plurality of hollow portions, A rib is disposed on the hollow portion, and the heat sink is disposed on the bottom plate.
• the body is integrally formed from a plastic material.
• the bottom plate is provided with a metal reinforcing piece, and the reinforcing piece is locked to the bottom plate by screws.
• a plurality of metal strips are disposed in the bottom plate, and the body is injection molded in combination with the metal strip, and the metal strip is buried in the bottom plate.
• the bottom plate is provided with an opening portion corresponding to the heat sink.
• the heat sink covers the opening and is screwed to the bottom plate.
• the heat sink is provided with a "" joint portion corresponding to the opening portion, and the engaging portion is engaged with the side of the opening portion, and the heat sink is assembled in the opening portion.
• the body is injection molded in combination with the heat sink, and an opening is formed and the heat sink is assembled in the opening.
• the present invention also provides a hollow backplane, comprising: a body and a heat sink disposed on the body, the body comprising a bottom plate and a side plate connecting the bottom plate, wherein the bottom plate is provided with a plurality of hollow portions, and the hollow portion is provided a reinforcing rib, the heat sink is disposed on the bottom plate;
• the body is integrally formed from a plastic material
• the bottom plate is provided with a metal reinforcing piece, and the reinforcing piece is locked to the bottom plate by screws;
• the bottom plate is provided with an opening portion corresponding to the heat sink
• the heat sink covers the opening and is screwed to the bottom plate.
• the present invention further provides a backlight module, including a backplane, a backlight disposed in the backplane, and a hollow backplane disposed on the backplane, the body comprising a body and a heat sink disposed on the body, the body
• the bottom plate includes a bottom plate and a bottom plate.
• the bottom plate is provided with a plurality of hollow portions, and the hollow portion is provided with a reinforcing rib.
• the heat dissipation fin is disposed on the bottom plate, and the body is integrally formed from a plastic material.
• the bottom plate is provided with a metal reinforcing piece, and the reinforcing piece is locked to the bottom plate by screws.
• the hollow backplane of the present invention and the backlight module using the same A hollow portion is arranged on the bottom plate of the back plate made of plastic material to reduce the weight of the back plate, and the strength of the back plate is ensured by the reinforcing ribs, thereby greatly reducing the weight and reducing the cost while ensuring the strength of the back plate. Moreover, the weight of the liquid crystal display device is facilitated, and the back sheet of the present invention has a simple structure and is easy to process, thereby further reducing the production cost.
• FIG. 1 is a perspective exploded view of a conventional liquid crystal display device
• FIG. 2 is a perspective exploded view of the first embodiment of the hollow back panel of the present invention.
• FIG. 3 is a perspective exploded view of a second embodiment of the hollow backing plate of the present invention.
• FIG. 4 is a perspective exploded view of a third embodiment of the hollow backing plate of the present invention.
• FIG. 5 is a perspective structural view of another embodiment of a heat sink of a hollow backplane according to the present invention
• FIG. 6 is a schematic structural view of a backlight module of the present invention. detailed description
• the present invention provides a hollow backplane 2, which includes: a body 20 and a heat sink 40 disposed on the body 20.
• the body 20 includes a bottom plate 22 and a side plate 24 connecting the bottom plate 22,
• the bottom plate 22 is provided with a plurality of hollow portions 220.
• the hollow portion 220 is provided with a reinforcing rib 230, and the heat sink 40 is disposed on the bottom plate 22.
• the body 20 is integrally formed of a plastic material, and is provided with a hollow portion 220, so that the cost and weight of the back plate 2 of the present invention are relatively low, and the arrangement of the reinforcing bars 230 ensures the strength of the back plate 2, and further
• the back sheet 2 of the present invention effectively reduces the production cost while ensuring the use strength, and contributes to the weight reduction of the liquid crystal display device.
• the hollow portions 220 are three and are arranged in a rectangular shape.
• the three hollow portions 220 are respectively named as the first hollow portion 222, the second hollow portion 224, and the third portion.
• the strength of the side corner position this embodiment is also in the first hollow portion 222
• a second reinforcing rib 234 is obliquely pulled away from the two corners away from the side of the second hollow portion 224.
• the second hollow portion 224 is located at an intermediate position of the back plate 2, and is provided with two third reinforcing ribs 236 at one end thereof.
• the third reinforcing rib 236 is horizontally disposed at one end of the second hollow portion 224.
• the third hollow portion 226 is located at the other end of the backboard 2, and is provided with two fourth reinforcing ribs 238 at a diagonal position to strengthen the strength of the backboard 2, and is disposed at two corners near the side of the heat sink 40.
• the fifth reinforcing rib 239 is for reinforcing the strength of the other side corner of the backboard 2.
• the heat sink 40 is disposed on a side of the third hollow portion 226 away from the second hollow portion 224.
• the bottom plate 22 is provided with a rectangular opening portion 204 corresponding to the heat sink 40.
• the heat sink 40 is disposed.
• a rectangular body 42 and a protrusion 44 protruding from the rectangular body 42 are included. When assembled, the heat sink 40 covers the opening 204 and is screwed to the bottom plate 22.
• FIG 3 is a perspective exploded view of a second embodiment of the hollow backplane 2 of the present invention.
• the bottom plate 22 is provided with a plurality of metal strips 60, and the body 20 is injection molded with the metal strips 60.
• the metal strip 60 is embedded in the bottom plate 22 to further strengthen the strength of the back sheet 2.
• FIG. 4 is a perspective exploded view of a third embodiment of the hollow backing plate 2 of the present invention.
• the bottom plate 22 is provided with a metal reinforcing plate 80, and the reinforcing plate 80 is locked by screws.
• the strength of the back plate 2" is further strengthened.
• FIG. 5 is a schematic perspective view of another embodiment of a heat sink of a hollow backplane according to the present invention.
• the heat sink 40 is corresponding to the opening 204 of the bottom plate 22 of the backboard 2.
• the heat sink 40 is processed first, and then the body 20 is combined with the heat sink 40, injection molded, the opening 204 is formed, and the heat sink 40 is assembled in the opening portion 204.
• the present invention further provides a backlight module, including a back plate 2 , a backlight 4 disposed in the back plate 2 , a reflective sheet 6 disposed in the back plate 2 , and a reflective sheet 6 .
• the back plate 2 is a hollow back plate, and includes a body 20 and a heat sink 40 disposed on the body 20.
• the body 20 includes The bottom plate 22 and the side plate 24 of the bottom plate 22 are provided with a plurality of hollow portions 220.
• the hollow portion 220 is provided with a reinforcing rib 230, and the heat sink 40 is disposed on the bottom plate 22.
• the body 20 is integrally formed of a plastic material, and is provided with a hollow portion 220, so that the cost and weight of the back plate 2 of the present invention are relatively low, and the arrangement of the reinforcing bars 230 ensures the strength of the back plate 2, and further
• the back sheet 2 of the present invention effectively reduces the production cost while ensuring the use strength, and contributes to the weight reduction of the liquid crystal display device.
• the hollow portions 220 are three and are arranged in a rectangular shape for convenience.
• the three hollow portions 220 are respectively named as the first hollow portion 222, the second hollow portion 224, and the third hollow portion 226, wherein the first hollow portion 222 is disposed at one end of the backboard 2 away from the heat sink 40.
• two first reinforcing ribs 232 are provided to strengthen the strength of the backing plate 2.
• the embodiment is further away from the second hollowing out of the first hollow portion 222.
• a second reinforcing rib 234 is disposed obliquely on the two corners of the portion 224 side.
• the second hollow portion 224 is located at an intermediate position of the back plate 2, and is provided with two third reinforcing ribs 236 at one end thereof.
• the third reinforcing rib 236 is horizontally disposed at one end of the second hollow portion 224.
• the third hollow portion 226 is located at the other end of the backboard 2, and is provided with two fourth reinforcing ribs 238 at a diagonal position to strengthen the strength of the backboard 2, and is disposed at two corners near the side of the heat sink 40.
• the fifth reinforcing rib 239 is for reinforcing the strength of the other side corner of the backboard 2.
• the heat sink 40 is disposed on a side of the third hollow portion 226 away from the second hollow portion 224.
• the bottom plate 22 is provided with a rectangular opening portion 204 corresponding to the heat sink 40.
• the heat sink 40 is disposed.
• a rectangular body 42 and a protrusion 44 protruding from the rectangular body 42 are included. When assembled, the heat sink 40 covers the opening 204 and is screwed to the bottom plate 22.
• a metal reinforcing sheet may be disposed on the bottom plate of the backboard or a metal strip may be embedded in the backing plate, and the metal reinforcing sheet may be locked to the bottom plate by screws.
• the hollow backplane of the present invention and the backlight module using the backplane are provided with a hollow portion on the bottom plate of the backboard made of plastic material to reduce the weight of the backboard and ensure the reinforcement by the reinforcing ribs.
• the strength of the back sheet greatly reduces the weight and the cost while ensuring the strength of the back sheet, and the weight of the liquid crystal display device is facilitated, and the back sheet of the present invention has a simple structure and is easy to process, thereby further reducing the production cost.

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• Physics & Mathematics (AREA)
• Nonlinear Science (AREA)
• Mathematical Physics (AREA)
• Chemical & Material Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Liquid Crystal (AREA)
• Planar Illumination Modules (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47197311

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (7)

Citations (5)

Family Cites Families (10)

• 2012
  • 2012-09-07 CN CN201210330072.3A patent/CN102798095B/zh not_active Expired - Fee Related
  • 2012-09-14 WO PCT/CN2012/081372 patent/WO2014036755A1/fr not_active Ceased
  • 2012-09-14 DE DE112012006886.6T patent/DE112012006886T5/de not_active Ceased

Patent Citations (5)

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